Trait django_query::filtering::FilterableWithContext

pub trait FilterableWithContext<'a, A: 'a>: Sized {
    type Meta: Meta<'a, Self>;

    fn get_meta(access: A) -> Self::Meta;
}

Available on crate feature filter only.

Something that can describe how to filter itself if a context type is provided.

Something implementing this trait can provide a Meta which describes its supported fields and their operators, but only when a context object is provided. Note that the provided context object may be stored within the Meta type, which is the origin of the lifetime parameter.

This can be derived via the FilterableWithPersianRug derive macro for the case of a persian-rug type.

Required Associated Types

type Meta: Meta<'a, Self>

Meta is the type which can describe our fields and their operators.

Required Methods

fn get_meta(access: A) -> Self::Meta

get_meta produces an instance of our Meta type.

Here access is some context object that we need in order to provide filters for our type.

Implementations on Foreign Types

impl<'a, A, T> FilterableWithContext<'a, A> for Option<T> where
    T: FilterableWithContext<'a, A>,
    A: 'a + Clone, 

type Meta = IterableMetaWithContext<A>

fn get_meta(access: A) -> Self::Meta

impl<'a, A, T> FilterableWithContext<'a, A> for Vec<T> where
    T: FilterableWithContext<'a, A>,
    A: 'a + Clone, 

type Meta = IterableMetaWithContext<A>

fn get_meta(access: A) -> Self::Meta

impl<'a, A, C, T> FilterableWithContext<'a, A> for Proxy<T> where
    T: FilterableWithContext<'a, A> + Contextual<Context = C>,
    A: Accessor<Context = C> + 'a,
    C: Context + Owner<T>,
    T: Contextual<Context = C>, 

type Meta = ProxyMeta<A>

Available on crate feature filter only.

fn get_meta(access: A) -> Self::Meta

Available on crate feature filter only.

Implementors